I have an account on that instance and naturally, I can view all of the communities on that instance, but when I search communities from this account, it doesn’t return any results from that instance.
Likewise, in a browser, I log in with this account and try to open a link to a post on that instance and it just says that I need to log in in order to post. 🤷
Yeah, I did manage to add them through the web UI, just not through the app… just feels like a lot of switching between apps and a lot of copy/pasteing just so that I can add a community.